The school invited Kent Police to run a drugs sweep with dogs

A sweep of the school will take place "shortly", said the head teacher of The Norton Knatchbull School in Ashford.

John Speller said in September a senior staff member found white powder in a plastic bag the size of a postage stamp, and it was found to be cocaine.

He said the school first tackled legal and moral issues in assemblies and then invited police to run a drugs sweep.

"It is well known that The Norton Knatchbull School has always taken a very firm line on illegal drugs and will continue to do so," Mr Speller said.

"In circumstances such as these, the important thing is to do what is right, rather than what is easy."

The school acted very promptly and did everything right Kent Police

The Class A drug was found on a staircase at the boys' grammar school.

Traces of drugs were also discovered around the school when police carried out swab tests.

"There was a small quantity of powder found in a bag sent away for analysis and it came back testing positive for cocaine," a spokeswoman for Kent Police said.

"Traces of drugs were found in other areas.

"The school acted very promptly and did everything right by calling us in."

She said: "We will be continuing to work closely with the headmaster at the school and we will be going back later on in the year to do some more drugs intervention work with the pupils."